BFK
type: MusicGroup
description: BFK may refer to Battelle for Kids, a not-for-profit organization BFK (song), by rapper Freddie Gibbs BFK (Swiss Air Force), short for Berufsfliegerkorps BFK (British Rail coach designation) BFK
popularity: 7
followers: 142
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa0aa846a941ae4379e0b33f48a81b09067ce78b37962769759bffa7705a7a36c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9555e542-62aa-4569-8be9-c9b765523d0e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9555e542-62aa-4569-8be9-c9b765523d0e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9555e542-62aa-4569-8be9-c9b765523d0e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0aa846a941ae4379e0b33f48a81b09067ce78b37962769759bffa7705a7a36c. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9555e542-62aa-4569-8be9-c9b765523d0e.json and https://artists.proofprofile.net/proofs/artist/9555e542-62aa-4569-8be9-c9b765523d0e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
album: Big Fat Karaoke 2018 Vol 1
  type: MusicAlbum
  date published: 2018-10-17
album: Big Fat Karaoke 2018 Vol 3
  type: MusicAlbum
  date published: 2018-10-17
album: Big Fat Karaoke 2018 Vol 4
  type: MusicAlbum
  date published: 2018-10-17
album: Big Fat Karaoke 2018 Vol 2
  type: MusicAlbum
  date published: 2018-10-17
album: Big Fat Karaoke 2018 Vol 5
  type: MusicAlbum
  date published: 2018-10-18
album: Big Fat Karaoke 2018 Vol 7
  type: MusicAlbum
  date published: 2018-10-18
album: Big Fat Karaoke 2018 Vol 8
  type: MusicAlbum
  date published: 2018-10-18
album: Big Fat Karaoke 2018 Vol 11
  type: MusicAlbum
  date published: 2018-10-18
album: Big Fat Karaoke 2018 Vol 9
  type: MusicAlbum
  date published: 2018-10-19
album: Big Fat Karaoke 2018 Vol 13
  type: MusicAlbum
  date published: 2018-10-19
album: Big Fat Karaoke 2018 Vol 12
  type: MusicAlbum
  date published: 2018-10-19
album: Big Fat Karaoke 2018 Vol 19
  type: MusicAlbum
  date published: 2018-10-22
album: Big Fat Karaoke 2018 Vol 21
  type: MusicAlbum
  date published: 2018-10-22
album: Big Fat Karaoke 2018 Vol 18
  type: MusicAlbum
  date published: 2018-10-22
album: Big Fat Karaoke 2018 Vol 16
  type: MusicAlbum
  date published: 2018-10-22
album: Big Fat Karaoke 2018 Vol 14
  type: MusicAlbum
  date published: 2018-10-22
album: Big Fat Karaoke 2018 Vol 22
  type: MusicAlbum
  date published: 2018-10-22
album: Big Fat Karaoke 2018 Vol 17
  type: MusicAlbum
  date published: 2018-10-22
  track: Believer (Karaoke Version Originally performed by Imagine Dragons)
    type: MusicRecording
    duration: PT3M24S
    duration ms: 204826
    explicit: false
    by artist: BFK
    in album: Big Fat Karaoke 2018 Vol 17
      type: MusicAlbum
      date published: 2018-10-22
    isrc code: GBHJQ1899009
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T01:11:13+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x33eebc3bfa6db80f8b559f062dc4202e76e6fa4bf0039ac9665175cb0070f57c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958951
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958951
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBHJQ1899009
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T04:07:02Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33eebc3bfa6db80f8b559f062dc4202e76e6fa4bf0039ac9665175cb0070f57c. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:07:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBHJQ1899009.
      date published: 2026-07-21T04:07:02Z
    audio: Believer (Karaoke Version Originally performed by Imagine Dragons)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 125.663
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.686
      additional property: Energy
        type: PropertyValue
        value: 0.693
      additional property: Speechiness
        type: PropertyValue
        value: 0.071
      additional property: Acousticness
        type: PropertyValue
        value: 0.003
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.875
      additional property: Liveness
        type: PropertyValue
        value: 0.076
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.564
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.55
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Big Fat Karaoke 2018 Vol 23
  type: MusicAlbum
  date published: 2018-10-22
album: Big Fat Karaoke 2018 Vol 24
  type: MusicAlbum
  date published: 2018-10-23
album: Big Fat Karaoke 2018 Vol 25
  type: MusicAlbum
  date published: 2018-10-23
album: V2V
  type: MusicAlbum
  date published: 2020-05-20